Description: Bluetooth smart watch is used to detect heart rate/blood oxygen, display weather and temperature, sleep, etc. Smart watch is based on pulse rate technology, heart rate, blood oxygen detection through the bracelet sensor, measured and displayed on the screen. Smart watch is metal body design, metal vacuum plating, anti-scratch process, enhance the metal texture and hardness of the watch, scratch-resistant, wear-resistant. Sports health tracker has a variety of sports modes, it records sports data in real time without the mobile phone. And sports health data can be synchronized to App, you can view your own sports health data in the app. Specification: Color: black, white, pink. Material: zinc alloy + environmentally friendly plastic. Size: 4.1x3.4x1cm. Screen size: 1.3 inches. Communication function: not supported. Battery capacity: 170 ma. Screen resolution: 240*240. Wristband material: silicone. Waterproof rating: IP67. Bluetooth version: 4.0. Compatible: Replacement for IOS 8.4 and above/Replacement for android 4.4 and above. Note: There might be a bit color distortions due to different computer resolutions. There might be a slight errors due to different hand measurement. Package Included: 1 x watch. 1 x charger. 1 x manual.